Compressor unloading valve

Details Compressor unloading valve Compressor unloading valve

2011-02-15

2011-02-15

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

C418S087000, C418S201100, C418S180000, C418S270000, C417S279000, C417S310000, C251S061400

Reexamination Certificate

active

07887310

ABSTRACT:
A compressor (20) has an unloading slide valve (100). The valve has a valve element (102) having a range between a first condition and a second condition, the second condition being unloaded relative to the first condition. A piston (124) is in a cylinder (128) and mechanically coupled to the valve element. A control valve (40; 42) is coupled to a headspace (138) of the cylinder to selectively expose the headspace to a fluid source (144), pressure of fluid in the headspace producing a force on the piston and valve element in a direction from the second condition toward the first condition. The compressor includes means (190, 192; 210; 220) for relieving excess pressure in the headspace.

REFERENCES:
patent: 2778598 (1957-01-01), Bolling, Jr.
patent: 3593959 (1971-07-01), Greene
patent: 4249866 (1981-02-01), Shaw et al.
patent: 4678406 (1987-07-01), Pillis et al.
patent: 5044894 (1991-09-01), Field et al.
patent: 6082985 (2000-07-01), Suzuki et al.
patent: 6302668 (2001-10-01), Lee
patent: 6431210 (2002-08-01), Lowe et al.
patent: 6739853 (2004-05-01), Tang et al.
patent: 0177234 (1986-04-01), None
patent: 5-52195 (1993-03-01), None
European Office Action for EP Patent Application No. 05713015.5, dated Sep. 15, 2010.

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